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Flexmax MPPT 80 solar charge controller works for about one year, what causes the LCD display black screen, and how to check?

Flexmax MPPT 80 solar charge controller works for about one year, what causes the LCD display black screen, and how to check?

2021-01-28

Hello, the LCD screen of flexmax MPPT 80 solar charge controller may be black due to improper operation or other reasons.


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